Finding the Third Proportional to 30,807.75 and 63,075.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,807.75 : 63,075.38 = 63,075.38 : x
2. Step 2: Convert to fraction form
   30,807.75/63,075.38 = 63,075.38/x
3. Step 3: Cross multiply
   30,807.75x = 63,075.38 × 63,075.38
4. Step 4: Simplify right side
   30,807.75x = 3,978,502,931.39
5. Step 5: Solve for x
   x = 3,978,502,931.39/30,807.75
6. Step 6: Final answer
   x = 129,139.68