Finding the Third Proportional to 357,670 and 540,150

Step by Step Solution

1. Step 1: Write the proportion equation
   357,670 : 540,150 = 540,150 : x
2. Step 2: Convert to fraction form
   357,670/540,150 = 540,150/x
3. Step 3: Cross multiply
   357,670x = 540,150 × 540,150
4. Step 4: Simplify right side
   357,670x = 291,762,022,500
5. Step 5: Solve for x
   x = 291,762,022,500/357,670
6. Step 6: Final answer
   x = 815,729.65