Finding the Third Proportional to 183,485.50 and 280,698

Step by Step Solution

1. Step 1: Write the proportion equation
   183,485.50 : 280,698 = 280,698 : x
2. Step 2: Convert to fraction form
   183,485.50/280,698 = 280,698/x
3. Step 3: Cross multiply
   183,485.50x = 280,698 × 280,698
4. Step 4: Simplify right side
   183,485.50x = 78,791,367,204
5. Step 5: Solve for x
   x = 78,791,367,204/183,485.50
6. Step 6: Final answer
   x = 429,414.68