Finding the Third Proportional to 647,700 and 980,586

Step by Step Solution

1. Step 1: Write the proportion equation
   647,700 : 980,586 = 980,586 : x
2. Step 2: Convert to fraction form
   647,700/980,586 = 980,586/x
3. Step 3: Cross multiply
   647,700x = 980,586 × 980,586
4. Step 4: Simplify right side
   647,700x = 961,548,903,396
5. Step 5: Solve for x
   x = 961,548,903,396/647,700
6. Step 6: Final answer
   x = 1,484,559.06