Finding the Third Proportional to 30,140.86 and 65,637.84

Step by Step Solution

1. Step 1: Write the proportion equation
   30,140.86 : 65,637.84 = 65,637.84 : x
2. Step 2: Convert to fraction form
   30,140.86/65,637.84 = 65,637.84/x
3. Step 3: Cross multiply
   30,140.86x = 65,637.84 × 65,637.84
4. Step 4: Simplify right side
   30,140.86x = 4,308,326,532.15
5. Step 5: Solve for x
   x = 4,308,326,532.15/30,140.86
6. Step 6: Final answer
   x = 142,939.74