Finding the Third Proportional to 215,827.50 and 319,554

Step by Step Solution

1. Step 1: Write the proportion equation
   215,827.50 : 319,554 = 319,554 : x
2. Step 2: Convert to fraction form
   215,827.50/319,554 = 319,554/x
3. Step 3: Cross multiply
   215,827.50x = 319,554 × 319,554
4. Step 4: Simplify right side
   215,827.50x = 102,114,758,916
5. Step 5: Solve for x
   x = 102,114,758,916/215,827.50
6. Step 6: Final answer
   x = 473,131.36