Finding the Third Proportional to 129,919.50 and 293,445

Step by Step Solution

1. Step 1: Write the proportion equation
   129,919.50 : 293,445 = 293,445 : x
2. Step 2: Convert to fraction form
   129,919.50/293,445 = 293,445/x
3. Step 3: Cross multiply
   129,919.50x = 293,445 × 293,445
4. Step 4: Simplify right side
   129,919.50x = 86,109,968,025
5. Step 5: Solve for x
   x = 86,109,968,025/129,919.50
6. Step 6: Final answer
   x = 662,794.79