Finding the Third Proportional to 615,978,715,174.29 and 905,516,036,858.91

Step by Step Solution

1. Step 1: Write the proportion equation
   615,978,715,174.29 : 905,516,036,858.91 = 905,516,036,858.91 : x
2. Step 2: Convert to fraction form
   615,978,715,174.29/905,516,036,858.91 = 905,516,036,858.91/x
3. Step 3: Cross multiply
   615,978,715,174.29x = 905,516,036,858.91 × 905,516,036,858.91
4. Step 4: Simplify right side
   615,978,715,174.29x = 819,959,293,008,666,964,262,912
5. Step 5: Solve for x
   x = 819,959,293,008,666,964,262,912/615,978,715,174.29
6. Step 6: Final answer
   x = 1,331,148,743,957.27