Finding the Third Proportional to 13,090 and 28,380

Step by Step Solution

1. Step 1: Write the proportion equation
   13,090 : 28,380 = 28,380 : x
2. Step 2: Convert to fraction form
   13,090/28,380 = 28,380/x
3. Step 3: Cross multiply
   13,090x = 28,380 × 28,380
4. Step 4: Simplify right side
   13,090x = 805,424,400
5. Step 5: Solve for x
   x = 805,424,400/13,090
6. Step 6: Final answer
   x = 61,529.75