Finding the Third Proportional to 30,549.66 and 64,174.78

Step by Step Solution

1. Step 1: Write the proportion equation
   30,549.66 : 64,174.78 = 64,174.78 : x
2. Step 2: Convert to fraction form
   30,549.66/64,174.78 = 64,174.78/x
3. Step 3: Cross multiply
   30,549.66x = 64,174.78 × 64,174.78
4. Step 4: Simplify right side
   30,549.66x = 4,118,402,548.49
5. Step 5: Solve for x
   x = 4,118,402,548.49/30,549.66
6. Step 6: Final answer
   x = 134,810.11