Finding the Third Proportional to 491,410 and 720,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   491,410 : 720,779.50 = 720,779.50 : x
2. Step 2: Convert to fraction form
   491,410/720,779.50 = 720,779.50/x
3. Step 3: Cross multiply
   491,410x = 720,779.50 × 720,779.50
4. Step 4: Simplify right side
   491,410x = 519,523,087,620.25
5. Step 5: Solve for x
   x = 519,523,087,620.25/491,410
6. Step 6: Final answer
   x = 1,057,209.03