Finding the Third Proportional to 183,486 and 280,699.50

Step by Step Solution

1. Step 1: Write the proportion equation
   183,486 : 280,699.50 = 280,699.50 : x
2. Step 2: Convert to fraction form
   183,486/280,699.50 = 280,699.50/x
3. Step 3: Cross multiply
   183,486x = 280,699.50 × 280,699.50
4. Step 4: Simplify right side
   183,486x = 78,792,209,300.25
5. Step 5: Solve for x
   x = 78,792,209,300.25/183,486
6. Step 6: Final answer
   x = 429,418.10