Finding the Third Proportional to 42,145.88 and 89,654.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.88 : 89,654.63 = 89,654.63 : x
2. Step 2: Convert to fraction form
   42,145.88/89,654.63 = 89,654.63/x
3. Step 3: Cross multiply
   42,145.88x = 89,654.63 × 89,654.63
4. Step 4: Simplify right side
   42,145.88x = 8,037,951,783.89
5. Step 5: Solve for x
   x = 8,037,951,783.89/42,145.88
6. Step 6: Final answer
   x = 190,717.40