Finding the Third Proportional to 199,554 and 299,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,554 : 299,320.50 = 299,320.50 : x
2. Step 2: Convert to fraction form
   199,554/299,320.50 = 299,320.50/x
3. Step 3: Cross multiply
   199,554x = 299,320.50 × 299,320.50
4. Step 4: Simplify right side
   199,554x = 89,592,761,720.25
5. Step 5: Solve for x
   x = 89,592,761,720.25/199,554
6. Step 6: Final answer
   x = 448,965.00