Finding the Third Proportional to 243,090 and 530,040

Step by Step Solution

1. Step 1: Write the proportion equation
   243,090 : 530,040 = 530,040 : x
2. Step 2: Convert to fraction form
   243,090/530,040 = 530,040/x
3. Step 3: Cross multiply
   243,090x = 530,040 × 530,040
4. Step 4: Simplify right side
   243,090x = 280,942,401,600
5. Step 5: Solve for x
   x = 280,942,401,600/243,090
6. Step 6: Final answer
   x = 1,155,713.53