Finding the Third Proportional to 655,317 and 988,996.50

Step by Step Solution

1. Step 1: Write the proportion equation
   655,317 : 988,996.50 = 988,996.50 : x
2. Step 2: Convert to fraction form
   655,317/988,996.50 = 988,996.50/x
3. Step 3: Cross multiply
   655,317x = 988,996.50 × 988,996.50
4. Step 4: Simplify right side
   655,317x = 978,114,077,012.25
5. Step 5: Solve for x
   x = 978,114,077,012.25/655,317
6. Step 6: Final answer
   x = 1,492,581.57