Finding the Third Proportional to 211,689 and 456,613.50

Step by Step Solution

1. Step 1: Write the proportion equation
   211,689 : 456,613.50 = 456,613.50 : x
2. Step 2: Convert to fraction form
   211,689/456,613.50 = 456,613.50/x
3. Step 3: Cross multiply
   211,689x = 456,613.50 × 456,613.50
4. Step 4: Simplify right side
   211,689x = 208,495,888,382.25
5. Step 5: Solve for x
   x = 208,495,888,382.25/211,689
6. Step 6: Final answer
   x = 984,916.02