Finding the Third Proportional to 72,678,367 and 111,711,684

Step by Step Solution

1. Step 1: Write the proportion equation
   72,678,367 : 111,711,684 = 111,711,684 : x
2. Step 2: Convert to fraction form
   72,678,367/111,711,684 = 111,711,684/x
3. Step 3: Cross multiply
   72,678,367x = 111,711,684 × 111,711,684
4. Step 4: Simplify right side
   72,678,367x = 12,479,500,342,115,856
5. Step 5: Solve for x
   x = 12,479,500,342,115,856/72,678,367
6. Step 6: Final answer
   x = 171,708,595.79