Finding the Third Proportional to 526,468.50 and 814,509

Step by Step Solution

1. Step 1: Write the proportion equation
   526,468.50 : 814,509 = 814,509 : x
2. Step 2: Convert to fraction form
   526,468.50/814,509 = 814,509/x
3. Step 3: Cross multiply
   526,468.50x = 814,509 × 814,509
4. Step 4: Simplify right side
   526,468.50x = 663,424,911,081
5. Step 5: Solve for x
   x = 663,424,911,081/526,468.50
6. Step 6: Final answer
   x = 1,260,141.70