Finding the Third Proportional to 153,132.50 and 245,842

Step by Step Solution

1. Step 1: Write the proportion equation
   153,132.50 : 245,842 = 245,842 : x
2. Step 2: Convert to fraction form
   153,132.50/245,842 = 245,842/x
3. Step 3: Cross multiply
   153,132.50x = 245,842 × 245,842
4. Step 4: Simplify right side
   153,132.50x = 60,438,288,964
5. Step 5: Solve for x
   x = 60,438,288,964/153,132.50
6. Step 6: Final answer
   x = 394,679.70