Finding the Third Proportional to 12,139.13 and 19,074.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139.13 : 19,074.38 = 19,074.38 : x
2. Step 2: Convert to fraction form
   12,139.13/19,074.38 = 19,074.38/x
3. Step 3: Cross multiply
   12,139.13x = 19,074.38 × 19,074.38
4. Step 4: Simplify right side
   12,139.13x = 363,831,781.64
5. Step 5: Solve for x
   x = 363,831,781.64/12,139.13
6. Step 6: Final answer
   x = 29,971.83