Finding the Third Proportional to 647,542 and 1,373,990

Step by Step Solution

1. Step 1: Write the proportion equation
   647,542 : 1,373,990 = 1,373,990 : x
2. Step 2: Convert to fraction form
   647,542/1,373,990 = 1,373,990/x
3. Step 3: Cross multiply
   647,542x = 1,373,990 × 1,373,990
4. Step 4: Simplify right side
   647,542x = 1,887,848,520,100
5. Step 5: Solve for x
   x = 1,887,848,520,100/647,542
6. Step 6: Final answer
   x = 2,915,407.06