Finding the Third Proportional to 656,856 and 989,984.25

Step by Step Solution

1. Step 1: Write the proportion equation
   656,856 : 989,984.25 = 989,984.25 : x
2. Step 2: Convert to fraction form
   656,856/989,984.25 = 989,984.25/x
3. Step 3: Cross multiply
   656,856x = 989,984.25 × 989,984.25
4. Step 4: Simplify right side
   656,856x = 980,068,815,248.06
5. Step 5: Solve for x
   x = 980,068,815,248.06/656,856
6. Step 6: Final answer
   x = 1,492,060.38