Finding the Third Proportional to 161,887.50 and 253,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,887.50 : 253,426.50 = 253,426.50 : x
2. Step 2: Convert to fraction form
   161,887.50/253,426.50 = 253,426.50/x
3. Step 3: Cross multiply
   161,887.50x = 253,426.50 × 253,426.50
4. Step 4: Simplify right side
   161,887.50x = 64,224,990,902.25
5. Step 5: Solve for x
   x = 64,224,990,902.25/161,887.50
6. Step 6: Final answer
   x = 396,726.07