Finding the Third Proportional to 213,087 and 459,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   213,087 : 459,384.50 = 459,384.50 : x
2. Step 2: Convert to fraction form
   213,087/459,384.50 = 459,384.50/x
3. Step 3: Cross multiply
   213,087x = 459,384.50 × 459,384.50
4. Step 4: Simplify right side
   213,087x = 211,034,118,840.25
5. Step 5: Solve for x
   x = 211,034,118,840.25/213,087
6. Step 6: Final answer
   x = 990,366.00