Finding the Third Proportional to 127,561.50 and 279,315

Step by Step Solution

1. Step 1: Write the proportion equation
   127,561.50 : 279,315 = 279,315 : x
2. Step 2: Convert to fraction form
   127,561.50/279,315 = 279,315/x
3. Step 3: Cross multiply
   127,561.50x = 279,315 × 279,315
4. Step 4: Simplify right side
   127,561.50x = 78,016,869,225
5. Step 5: Solve for x
   x = 78,016,869,225/127,561.50
6. Step 6: Final answer
   x = 611,602.01