Finding the Third Proportional to 31,191,906 and 69,555,792

Step by Step Solution

1. Step 1: Write the proportion equation
   31,191,906 : 69,555,792 = 69,555,792 : x
2. Step 2: Convert to fraction form
   31,191,906/69,555,792 = 69,555,792/x
3. Step 3: Cross multiply
   31,191,906x = 69,555,792 × 69,555,792
4. Step 4: Simplify right side
   31,191,906x = 4,838,008,200,747,264
5. Step 5: Solve for x
   x = 4,838,008,200,747,264/31,191,906
6. Step 6: Final answer
   x = 155,104,603.12