Finding the Third Proportional to 661,527 and 989,698.50

Step by Step Solution

1. Step 1: Write the proportion equation
   661,527 : 989,698.50 = 989,698.50 : x
2. Step 2: Convert to fraction form
   661,527/989,698.50 = 989,698.50/x
3. Step 3: Cross multiply
   661,527x = 989,698.50 × 989,698.50
4. Step 4: Simplify right side
   661,527x = 979,503,120,902.25
5. Step 5: Solve for x
   x = 979,503,120,902.25/661,527
6. Step 6: Final answer
   x = 1,480,669.91