Finding the Third Proportional to 28,690 and 61,530.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,690 : 61,530.50 = 61,530.50 : x
2. Step 2: Convert to fraction form
   28,690/61,530.50 = 61,530.50/x
3. Step 3: Cross multiply
   28,690x = 61,530.50 × 61,530.50
4. Step 4: Simplify right side
   28,690x = 3,786,002,430.25
5. Step 5: Solve for x
   x = 3,786,002,430.25/28,690
6. Step 6: Final answer
   x = 131,962.44