Finding the Third Proportional to 316,810.13 and 656,064

Step by Step Solution

1. Step 1: Write the proportion equation
   316,810.13 : 656,064 = 656,064 : x
2. Step 2: Convert to fraction form
   316,810.13/656,064 = 656,064/x
3. Step 3: Cross multiply
   316,810.13x = 656,064 × 656,064
4. Step 4: Simplify right side
   316,810.13x = 430,419,972,096
5. Step 5: Solve for x
   x = 430,419,972,096/316,810.13
6. Step 6: Final answer
   x = 1,358,605.48