Finding the Third Proportional to 96,642.28 and 210,439.69

Step by Step Solution

1. Step 1: Write the proportion equation
   96,642.28 : 210,439.69 = 210,439.69 : x
2. Step 2: Convert to fraction form
   96,642.28/210,439.69 = 210,439.69/x
3. Step 3: Cross multiply
   96,642.28x = 210,439.69 × 210,439.69
4. Step 4: Simplify right side
   96,642.28x = 44,284,862,075.10
5. Step 5: Solve for x
   x = 44,284,862,075.10/96,642.28
6. Step 6: Final answer
   x = 458,234.86