Finding the Third Proportional to 519,866 and 1,117,090

Step by Step Solution

1. Step 1: Write the proportion equation
   519,866 : 1,117,090 = 1,117,090 : x
2. Step 2: Convert to fraction form
   519,866/1,117,090 = 1,117,090/x
3. Step 3: Cross multiply
   519,866x = 1,117,090 × 1,117,090
4. Step 4: Simplify right side
   519,866x = 1,247,890,068,100
5. Step 5: Solve for x
   x = 1,247,890,068,100/519,866
6. Step 6: Final answer
   x = 2,400,407.16