Finding the Third Proportional to 460,313 and 621,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   460,313 : 621,917.50 = 621,917.50 : x
2. Step 2: Convert to fraction form
   460,313/621,917.50 = 621,917.50/x
3. Step 3: Cross multiply
   460,313x = 621,917.50 × 621,917.50
4. Step 4: Simplify right side
   460,313x = 386,781,376,806.25
5. Step 5: Solve for x
   x = 386,781,376,806.25/460,313
6. Step 6: Final answer
   x = 840,257.34