Finding the Third Proportional to 607,099.50 and 877,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   607,099.50 : 877,081.50 = 877,081.50 : x
2. Step 2: Convert to fraction form
   607,099.50/877,081.50 = 877,081.50/x
3. Step 3: Cross multiply
   607,099.50x = 877,081.50 × 877,081.50
4. Step 4: Simplify right side
   607,099.50x = 769,271,957,642.25
5. Step 5: Solve for x
   x = 769,271,957,642.25/607,099.50
6. Step 6: Final answer
   x = 1,267,126.65