Finding the Third Proportional to 153,022.50 and 215,108.25

Step by Step Solution

1. Step 1: Write the proportion equation
   153,022.50 : 215,108.25 = 215,108.25 : x
2. Step 2: Convert to fraction form
   153,022.50/215,108.25 = 215,108.25/x
3. Step 3: Cross multiply
   153,022.50x = 215,108.25 × 215,108.25
4. Step 4: Simplify right side
   153,022.50x = 46,271,559,218.06
5. Step 5: Solve for x
   x = 46,271,559,218.06/153,022.50
6. Step 6: Final answer
   x = 302,384.02