Finding the Third Proportional to 72,120,042 and 146,786,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,120,042 : 146,786,719.50 = 146,786,719.50 : x
2. Step 2: Convert to fraction form
   72,120,042/146,786,719.50 = 146,786,719.50/x
3. Step 3: Cross multiply
   72,120,042x = 146,786,719.50 × 146,786,719.50
4. Step 4: Simplify right side
   72,120,042x = 21,546,341,021,571,680
5. Step 5: Solve for x
   x = 21,546,341,021,571,680/72,120,042
6. Step 6: Final answer
   x = 298,756,634.41