Finding the Third Proportional to 72,678,402 and 111,711,708

Step by Step Solution

1. Step 1: Write the proportion equation
   72,678,402 : 111,711,708 = 111,711,708 : x
2. Step 2: Convert to fraction form
   72,678,402/111,711,708 = 111,711,708/x
3. Step 3: Cross multiply
   72,678,402x = 111,711,708 × 111,711,708
4. Step 4: Simplify right side
   72,678,402x = 12,479,505,704,277,264
5. Step 5: Solve for x
   x = 12,479,505,704,277,264/72,678,402
6. Step 6: Final answer
   x = 171,708,586.88