Finding the Third Proportional to 478,605.50 and 740,986

Step by Step Solution

1. Step 1: Write the proportion equation
   478,605.50 : 740,986 = 740,986 : x
2. Step 2: Convert to fraction form
   478,605.50/740,986 = 740,986/x
3. Step 3: Cross multiply
   478,605.50x = 740,986 × 740,986
4. Step 4: Simplify right side
   478,605.50x = 549,060,252,196
5. Step 5: Solve for x
   x = 549,060,252,196/478,605.50
6. Step 6: Final answer
   x = 1,147,208.40