Finding the Third Proportional to 42,576.75 and 64,454.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,576.75 : 64,454.63 = 64,454.63 : x
2. Step 2: Convert to fraction form
   42,576.75/64,454.63 = 64,454.63/x
3. Step 3: Cross multiply
   42,576.75x = 64,454.63 × 64,454.63
4. Step 4: Simplify right side
   42,576.75x = 4,154,398,683.89
5. Step 5: Solve for x
   x = 4,154,398,683.89/42,576.75
6. Step 6: Final answer
   x = 97,574.35