Finding the Third Proportional to 357,133 and 540,307.50

Step by Step Solution

1. Step 1: Write the proportion equation
   357,133 : 540,307.50 = 540,307.50 : x
2. Step 2: Convert to fraction form
   357,133/540,307.50 = 540,307.50/x
3. Step 3: Cross multiply
   357,133x = 540,307.50 × 540,307.50
4. Step 4: Simplify right side
   357,133x = 291,932,194,556.25
5. Step 5: Solve for x
   x = 291,932,194,556.25/357,133
6. Step 6: Final answer
   x = 817,432.71