Finding the Third Proportional to 72,678,308.06 and 111,711,572.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,678,308.06 : 111,711,572.72 = 111,711,572.72 : x
2. Step 2: Convert to fraction form
   72,678,308.06/111,711,572.72 = 111,711,572.72/x
3. Step 3: Cross multiply
   72,678,308.06x = 111,711,572.72 × 111,711,572.72
4. Step 4: Simplify right side
   72,678,308.06x = 12,479,475,479,296,570
5. Step 5: Solve for x
   x = 12,479,475,479,296,570/72,678,308.06
6. Step 6: Final answer
   x = 171,708,392.94