Finding the Third Proportional to 478,612 and 740,996

Step by Step Solution

1. Step 1: Write the proportion equation
   478,612 : 740,996 = 740,996 : x
2. Step 2: Convert to fraction form
   478,612/740,996 = 740,996/x
3. Step 3: Cross multiply
   478,612x = 740,996 × 740,996
4. Step 4: Simplify right side
   478,612x = 549,075,072,016
5. Step 5: Solve for x
   x = 549,075,072,016/478,612
6. Step 6: Final answer
   x = 1,147,223.79