Finding the Third Proportional to 253,072.50 and 550,428

Step by Step Solution

1. Step 1: Write the proportion equation
   253,072.50 : 550,428 = 550,428 : x
2. Step 2: Convert to fraction form
   253,072.50/550,428 = 550,428/x
3. Step 3: Cross multiply
   253,072.50x = 550,428 × 550,428
4. Step 4: Simplify right side
   253,072.50x = 302,970,983,184
5. Step 5: Solve for x
   x = 302,970,983,184/253,072.50
6. Step 6: Final answer
   x = 1,197,170.70