Finding the Third Proportional to 51,075.75 and 78,767.63

Step by Step Solution

1. Step 1: Write the proportion equation
   51,075.75 : 78,767.63 = 78,767.63 : x
2. Step 2: Convert to fraction form
   51,075.75/78,767.63 = 78,767.63/x
3. Step 3: Cross multiply
   51,075.75x = 78,767.63 × 78,767.63
4. Step 4: Simplify right side
   51,075.75x = 6,204,338,748.14
5. Step 5: Solve for x
   x = 6,204,338,748.14/51,075.75
6. Step 6: Final answer
   x = 121,473.28