Finding the Third Proportional to 12,970.13 and 20,123.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,970.13 : 20,123.44 = 20,123.44 : x
2. Step 2: Convert to fraction form
   12,970.13/20,123.44 = 20,123.44/x
3. Step 3: Cross multiply
   12,970.13x = 20,123.44 × 20,123.44
4. Step 4: Simplify right side
   12,970.13x = 404,952,736.82
5. Step 5: Solve for x
   x = 404,952,736.82/12,970.13
6. Step 6: Final answer
   x = 31,221.96