Finding the Third Proportional to 611,577 and 880,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   611,577 : 880,915.50 = 880,915.50 : x
2. Step 2: Convert to fraction form
   611,577/880,915.50 = 880,915.50/x
3. Step 3: Cross multiply
   611,577x = 880,915.50 × 880,915.50
4. Step 4: Simplify right side
   611,577x = 776,012,118,140.25
5. Step 5: Solve for x
   x = 776,012,118,140.25/611,577
6. Step 6: Final answer
   x = 1,268,870.67