Finding the Third Proportional to 72,678,351 and 111,711,630

Step by Step Solution

1. Step 1: Write the proportion equation
   72,678,351 : 111,711,630 = 111,711,630 : x
2. Step 2: Convert to fraction form
   72,678,351/111,711,630 = 111,711,630/x
3. Step 3: Cross multiply
   72,678,351x = 111,711,630 × 111,711,630
4. Step 4: Simplify right side
   72,678,351x = 12,479,488,277,256,900
5. Step 5: Solve for x
   x = 12,479,488,277,256,900/72,678,351
6. Step 6: Final answer
   x = 171,708,467.59