Finding the Third Proportional to 308,417.50 and 460,068

Step by Step Solution

1. Step 1: Write the proportion equation
   308,417.50 : 460,068 = 460,068 : x
2. Step 2: Convert to fraction form
   308,417.50/460,068 = 460,068/x
3. Step 3: Cross multiply
   308,417.50x = 460,068 × 460,068
4. Step 4: Simplify right side
   308,417.50x = 211,662,564,624
5. Step 5: Solve for x
   x = 211,662,564,624/308,417.50
6. Step 6: Final answer
   x = 686,285.85