Finding the Third Proportional to 660,942 and 988,904.25

Step by Step Solution

1. Step 1: Write the proportion equation
   660,942 : 988,904.25 = 988,904.25 : x
2. Step 2: Convert to fraction form
   660,942/988,904.25 = 988,904.25/x
3. Step 3: Cross multiply
   660,942x = 988,904.25 × 988,904.25
4. Step 4: Simplify right side
   660,942x = 977,931,615,668.06
5. Step 5: Solve for x
   x = 977,931,615,668.06/660,942
6. Step 6: Final answer
   x = 1,479,602.77