Finding the Third Proportional to 478,605 and 740,986.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,605 : 740,986.50 = 740,986.50 : x
2. Step 2: Convert to fraction form
   478,605/740,986.50 = 740,986.50/x
3. Step 3: Cross multiply
   478,605x = 740,986.50 × 740,986.50
4. Step 4: Simplify right side
   478,605x = 549,060,993,182.25
5. Step 5: Solve for x
   x = 549,060,993,182.25/478,605
6. Step 6: Final answer
   x = 1,147,211.15