Finding the Third Proportional to 42,145.31 and 89,849.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.31 : 89,849.25 = 89,849.25 : x
2. Step 2: Convert to fraction form
   42,145.31/89,849.25 = 89,849.25/x
3. Step 3: Cross multiply
   42,145.31x = 89,849.25 × 89,849.25
4. Step 4: Simplify right side
   42,145.31x = 8,072,887,725.56
5. Step 5: Solve for x
   x = 8,072,887,725.56/42,145.31
6. Step 6: Final answer
   x = 191,548.89