Finding the Third Proportional to 210,328.50 and 456,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,328.50 : 456,144.50 = 456,144.50 : x
2. Step 2: Convert to fraction form
   210,328.50/456,144.50 = 456,144.50/x
3. Step 3: Cross multiply
   210,328.50x = 456,144.50 × 456,144.50
4. Step 4: Simplify right side
   210,328.50x = 208,067,804,880.25
5. Step 5: Solve for x
   x = 208,067,804,880.25/210,328.50
6. Step 6: Final answer
   x = 989,251.60