Finding the Third Proportional to 183,686.50 and 276,880

Step by Step Solution

1. Step 1: Write the proportion equation
   183,686.50 : 276,880 = 276,880 : x
2. Step 2: Convert to fraction form
   183,686.50/276,880 = 276,880/x
3. Step 3: Cross multiply
   183,686.50x = 276,880 × 276,880
4. Step 4: Simplify right side
   183,686.50x = 76,662,534,400
5. Step 5: Solve for x
   x = 76,662,534,400/183,686.50
6. Step 6: Final answer
   x = 417,355.30