Finding the Third Proportional to 99,916.50 and 214,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,916.50 : 214,003.50 = 214,003.50 : x
2. Step 2: Convert to fraction form
   99,916.50/214,003.50 = 214,003.50/x
3. Step 3: Cross multiply
   99,916.50x = 214,003.50 × 214,003.50
4. Step 4: Simplify right side
   99,916.50x = 45,797,498,012.25
5. Step 5: Solve for x
   x = 45,797,498,012.25/99,916.50
6. Step 6: Final answer
   x = 458,357.71