Finding the Third Proportional to 77,008.50 and 155,161.69

Step by Step Solution

1. Step 1: Write the proportion equation
   77,008.50 : 155,161.69 = 155,161.69 : x
2. Step 2: Convert to fraction form
   77,008.50/155,161.69 = 155,161.69/x
3. Step 3: Cross multiply
   77,008.50x = 155,161.69 × 155,161.69
4. Step 4: Simplify right side
   77,008.50x = 24,075,149,267.85
5. Step 5: Solve for x
   x = 24,075,149,267.85/77,008.50
6. Step 6: Final answer
   x = 312,629.77