Finding the Third Proportional to 12,390 and 26,884.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,390 : 26,884.50 = 26,884.50 : x
2. Step 2: Convert to fraction form
   12,390/26,884.50 = 26,884.50/x
3. Step 3: Cross multiply
   12,390x = 26,884.50 × 26,884.50
4. Step 4: Simplify right side
   12,390x = 722,776,340.25
5. Step 5: Solve for x
   x = 722,776,340.25/12,390
6. Step 6: Final answer
   x = 58,335.46