Finding the Third Proportional to 153,025.50 and 215,110.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,025.50 : 215,110.50 = 215,110.50 : x
2. Step 2: Convert to fraction form
   153,025.50/215,110.50 = 215,110.50/x
3. Step 3: Cross multiply
   153,025.50x = 215,110.50 × 215,110.50
4. Step 4: Simplify right side
   153,025.50x = 46,272,527,210.25
5. Step 5: Solve for x
   x = 46,272,527,210.25/153,025.50
6. Step 6: Final answer
   x = 302,384.42