Finding the Third Proportional to 217,468.50 and 468,615

Step by Step Solution

1. Step 1: Write the proportion equation
   217,468.50 : 468,615 = 468,615 : x
2. Step 2: Convert to fraction form
   217,468.50/468,615 = 468,615/x
3. Step 3: Cross multiply
   217,468.50x = 468,615 × 468,615
4. Step 4: Simplify right side
   217,468.50x = 219,600,018,225
5. Step 5: Solve for x
   x = 219,600,018,225/217,468.50
6. Step 6: Final answer
   x = 1,009,801.50