Finding the Third Proportional to 5,394 and 12,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,394 : 12,670.50 = 12,670.50 : x
2. Step 2: Convert to fraction form
   5,394/12,670.50 = 12,670.50/x
3. Step 3: Cross multiply
   5,394x = 12,670.50 × 12,670.50
4. Step 4: Simplify right side
   5,394x = 160,541,570.25
5. Step 5: Solve for x
   x = 160,541,570.25/5,394
6. Step 6: Final answer
   x = 29,762.99