Finding the Third Proportional to 210,367.50 and 456,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,367.50 : 456,400.50 = 456,400.50 : x
2. Step 2: Convert to fraction form
   210,367.50/456,400.50 = 456,400.50/x
3. Step 3: Cross multiply
   210,367.50x = 456,400.50 × 456,400.50
4. Step 4: Simplify right side
   210,367.50x = 208,301,416,400.25
5. Step 5: Solve for x
   x = 208,301,416,400.25/210,367.50
6. Step 6: Final answer
   x = 990,178.69