Finding the Third Proportional to 66,498 and 142,336.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,498 : 142,336.50 = 142,336.50 : x
2. Step 2: Convert to fraction form
   66,498/142,336.50 = 142,336.50/x
3. Step 3: Cross multiply
   66,498x = 142,336.50 × 142,336.50
4. Step 4: Simplify right side
   66,498x = 20,259,679,232.25
5. Step 5: Solve for x
   x = 20,259,679,232.25/66,498
6. Step 6: Final answer
   x = 304,665.99