Finding the Third Proportional to 76,899 and 103,468.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,899 : 103,468.50 = 103,468.50 : x
2. Step 2: Convert to fraction form
   76,899/103,468.50 = 103,468.50/x
3. Step 3: Cross multiply
   76,899x = 103,468.50 × 103,468.50
4. Step 4: Simplify right side
   76,899x = 10,705,730,492.25
5. Step 5: Solve for x
   x = 10,705,730,492.25/76,899
6. Step 6: Final answer
   x = 139,218.07