Finding the Third Proportional to 12,980.50 and 20,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.50 : 20,045.50 = 20,045.50 : x
2. Step 2: Convert to fraction form
   12,980.50/20,045.50 = 20,045.50/x
3. Step 3: Cross multiply
   12,980.50x = 20,045.50 × 20,045.50
4. Step 4: Simplify right side
   12,980.50x = 401,822,070.25
5. Step 5: Solve for x
   x = 401,822,070.25/12,980.50
6. Step 6: Final answer
   x = 30,955.82