Finding the Third Proportional to 615,978,715,224 and 905,516,036,937

Step by Step Solution

1. Step 1: Write the proportion equation
   615,978,715,224 : 905,516,036,937 = 905,516,036,937 : x
2. Step 2: Convert to fraction form
   615,978,715,224/905,516,036,937 = 905,516,036,937/x
3. Step 3: Cross multiply
   615,978,715,224x = 905,516,036,937 × 905,516,036,937
4. Step 4: Simplify right side
   615,978,715,224x = 819,959,293,150,090,305,208,320
5. Step 5: Solve for x
   x = 819,959,293,150,090,305,208,320/615,978,715,224
6. Step 6: Final answer
   x = 1,331,148,744,079.43