Finding the Third Proportional to 127,510.50 and 278,349

Step by Step Solution

1. Step 1: Write the proportion equation
   127,510.50 : 278,349 = 278,349 : x
2. Step 2: Convert to fraction form
   127,510.50/278,349 = 278,349/x
3. Step 3: Cross multiply
   127,510.50x = 278,349 × 278,349
4. Step 4: Simplify right side
   127,510.50x = 77,478,165,801
5. Step 5: Solve for x
   x = 77,478,165,801/127,510.50
6. Step 6: Final answer
   x = 607,621.85