Finding the Third Proportional to 291,926 and 439,976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,926 : 439,976.50 = 439,976.50 : x
2. Step 2: Convert to fraction form
   291,926/439,976.50 = 439,976.50/x
3. Step 3: Cross multiply
   291,926x = 439,976.50 × 439,976.50
4. Step 4: Simplify right side
   291,926x = 193,579,320,552.25
5. Step 5: Solve for x
   x = 193,579,320,552.25/291,926
6. Step 6: Final answer
   x = 663,110.93