Finding the Third Proportional to 550,111.50 and 841,512.38

Step by Step Solution

1. Step 1: Write the proportion equation
   550,111.50 : 841,512.38 = 841,512.38 : x
2. Step 2: Convert to fraction form
   550,111.50/841,512.38 = 841,512.38/x
3. Step 3: Cross multiply
   550,111.50x = 841,512.38 × 841,512.38
4. Step 4: Simplify right side
   550,111.50x = 708,143,077,278.14
5. Step 5: Solve for x
   x = 708,143,077,278.14/550,111.50
6. Step 6: Final answer
   x = 1,287,271.90