Finding the Third Proportional to 352,980.50 and 540,071.50

Step by Step Solution

1. Step 1: Write the proportion equation
   352,980.50 : 540,071.50 = 540,071.50 : x
2. Step 2: Convert to fraction form
   352,980.50/540,071.50 = 540,071.50/x
3. Step 3: Cross multiply
   352,980.50x = 540,071.50 × 540,071.50
4. Step 4: Simplify right side
   352,980.50x = 291,677,225,112.25
5. Step 5: Solve for x
   x = 291,677,225,112.25/352,980.50
6. Step 6: Final answer
   x = 826,326.74