Finding the Third Proportional to 199,323 and 308,947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,323 : 308,947.50 = 308,947.50 : x
2. Step 2: Convert to fraction form
   199,323/308,947.50 = 308,947.50/x
3. Step 3: Cross multiply
   199,323x = 308,947.50 × 308,947.50
4. Step 4: Simplify right side
   199,323x = 95,448,557,756.25
5. Step 5: Solve for x
   x = 95,448,557,756.25/199,323
6. Step 6: Final answer
   x = 478,863.74