Finding the Third Proportional to 85,402,947,059 and 177,874,644,139

Step by Step Solution

1. Step 1: Write the proportion equation
   85,402,947,059 : 177,874,644,139 = 177,874,644,139 : x
2. Step 2: Convert to fraction form
   85,402,947,059/177,874,644,139 = 177,874,644,139/x
3. Step 3: Cross multiply
   85,402,947,059x = 177,874,644,139 × 177,874,644,139
4. Step 4: Simplify right side
   85,402,947,059x = 31,639,389,027,575,885,987,840
5. Step 5: Solve for x
   x = 31,639,389,027,575,885,987,840/85,402,947,059
6. Step 6: Final answer
   x = 370,471,864,462.92