Finding the Third Proportional to 168,429 and 260,149.50

Step by Step Solution

1. Step 1: Write the proportion equation
   168,429 : 260,149.50 = 260,149.50 : x
2. Step 2: Convert to fraction form
   168,429/260,149.50 = 260,149.50/x
3. Step 3: Cross multiply
   168,429x = 260,149.50 × 260,149.50
4. Step 4: Simplify right side
   168,429x = 67,677,762,350.25
5. Step 5: Solve for x
   x = 67,677,762,350.25/168,429
6. Step 6: Final answer
   x = 401,817.75