Finding the Third Proportional to 138,472.50 and 301,245

Step by Step Solution

1. Step 1: Write the proportion equation
   138,472.50 : 301,245 = 301,245 : x
2. Step 2: Convert to fraction form
   138,472.50/301,245 = 301,245/x
3. Step 3: Cross multiply
   138,472.50x = 301,245 × 301,245
4. Step 4: Simplify right side
   138,472.50x = 90,748,550,025
5. Step 5: Solve for x
   x = 90,748,550,025/138,472.50
6. Step 6: Final answer
   x = 655,354.31