Finding the Third Proportional to 66,630 and 141,886.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,630 : 141,886.50 = 141,886.50 : x
2. Step 2: Convert to fraction form
   66,630/141,886.50 = 141,886.50/x
3. Step 3: Cross multiply
   66,630x = 141,886.50 × 141,886.50
4. Step 4: Simplify right side
   66,630x = 20,131,778,882.25
5. Step 5: Solve for x
   x = 20,131,778,882.25/66,630
6. Step 6: Final answer
   x = 302,142.86