Finding the Third Proportional to 526,387.50 and 786,073.50

Step by Step Solution

1. Step 1: Write the proportion equation
   526,387.50 : 786,073.50 = 786,073.50 : x
2. Step 2: Convert to fraction form
   526,387.50/786,073.50 = 786,073.50/x
3. Step 3: Cross multiply
   526,387.50x = 786,073.50 × 786,073.50
4. Step 4: Simplify right side
   526,387.50x = 617,911,547,402.25
5. Step 5: Solve for x
   x = 617,911,547,402.25/526,387.50
6. Step 6: Final answer
   x = 1,173,872.00