Finding the Third Proportional to 366,570 and 555,117.75

Step by Step Solution

1. Step 1: Write the proportion equation
   366,570 : 555,117.75 = 555,117.75 : x
2. Step 2: Convert to fraction form
   366,570/555,117.75 = 555,117.75/x
3. Step 3: Cross multiply
   366,570x = 555,117.75 × 555,117.75
4. Step 4: Simplify right side
   366,570x = 308,155,716,365.06
5. Step 5: Solve for x
   x = 308,155,716,365.06/366,570
6. Step 6: Final answer
   x = 840,646.31