Finding the Third Proportional to 615,513 and 920,810

Step by Step Solution

1. Step 1: Write the proportion equation
   615,513 : 920,810 = 920,810 : x
2. Step 2: Convert to fraction form
   615,513/920,810 = 920,810/x
3. Step 3: Cross multiply
   615,513x = 920,810 × 920,810
4. Step 4: Simplify right side
   615,513x = 847,891,056,100
5. Step 5: Solve for x
   x = 847,891,056,100/615,513
6. Step 6: Final answer
   x = 1,377,535.58