Finding the Third Proportional to 70,998.19 and 155,359.69

Step by Step Solution

1. Step 1: Write the proportion equation
   70,998.19 : 155,359.69 = 155,359.69 : x
2. Step 2: Convert to fraction form
   70,998.19/155,359.69 = 155,359.69/x
3. Step 3: Cross multiply
   70,998.19x = 155,359.69 × 155,359.69
4. Step 4: Simplify right side
   70,998.19x = 24,136,632,500.10
5. Step 5: Solve for x
   x = 24,136,632,500.10/70,998.19
6. Step 6: Final answer
   x = 339,961.25