Finding the Third Proportional to 31,191,696 and 69,555,402

Step by Step Solution

1. Step 1: Write the proportion equation
   31,191,696 : 69,555,402 = 69,555,402 : x
2. Step 2: Convert to fraction form
   31,191,696/69,555,402 = 69,555,402/x
3. Step 3: Cross multiply
   31,191,696x = 69,555,402 × 69,555,402
4. Step 4: Simplify right side
   31,191,696x = 4,837,953,947,381,604
5. Step 5: Solve for x
   x = 4,837,953,947,381,604/31,191,696
6. Step 6: Final answer
   x = 155,103,908.02