Finding the Third Proportional to 67,899 and 98,770.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,899 : 98,770.50 = 98,770.50 : x
2. Step 2: Convert to fraction form
   67,899/98,770.50 = 98,770.50/x
3. Step 3: Cross multiply
   67,899x = 98,770.50 × 98,770.50
4. Step 4: Simplify right side
   67,899x = 9,755,611,670.25
5. Step 5: Solve for x
   x = 9,755,611,670.25/67,899
6. Step 6: Final answer
   x = 143,678.28