Finding the Third Proportional to 20,130.19 and 42,852.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,130.19 : 42,852.38 = 42,852.38 : x
2. Step 2: Convert to fraction form
   20,130.19/42,852.38 = 42,852.38/x
3. Step 3: Cross multiply
   20,130.19x = 42,852.38 × 42,852.38
4. Step 4: Simplify right side
   20,130.19x = 1,836,326,043.14
5. Step 5: Solve for x
   x = 1,836,326,043.14/20,130.19
6. Step 6: Final answer
   x = 91,222.50