Finding the Third Proportional to 253,696.50 and 545,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253,696.50 : 545,665.50 = 545,665.50 : x
2. Step 2: Convert to fraction form
   253,696.50/545,665.50 = 545,665.50/x
3. Step 3: Cross multiply
   253,696.50x = 545,665.50 × 545,665.50
4. Step 4: Simplify right side
   253,696.50x = 297,750,837,890.25
5. Step 5: Solve for x
   x = 297,750,837,890.25/253,696.50
6. Step 6: Final answer
   x = 1,173,649.77