Finding the Third Proportional to 515,280 and 1,045,116

Step by Step Solution

1. Step 1: Write the proportion equation
   515,280 : 1,045,116 = 1,045,116 : x
2. Step 2: Convert to fraction form
   515,280/1,045,116 = 1,045,116/x
3. Step 3: Cross multiply
   515,280x = 1,045,116 × 1,045,116
4. Step 4: Simplify right side
   515,280x = 1,092,267,453,456
5. Step 5: Solve for x
   x = 1,092,267,453,456/515,280
6. Step 6: Final answer
   x = 2,119,755.19