Finding the Third Proportional to 147,760.50 and 216,396

Step by Step Solution

1. Step 1: Write the proportion equation
   147,760.50 : 216,396 = 216,396 : x
2. Step 2: Convert to fraction form
   147,760.50/216,396 = 216,396/x
3. Step 3: Cross multiply
   147,760.50x = 216,396 × 216,396
4. Step 4: Simplify right side
   147,760.50x = 46,827,228,816
5. Step 5: Solve for x
   x = 46,827,228,816/147,760.50
6. Step 6: Final answer
   x = 316,913.04