Finding the Third Proportional to 407,469 and 890,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,469 : 890,662.50 = 890,662.50 : x
2. Step 2: Convert to fraction form
   407,469/890,662.50 = 890,662.50/x
3. Step 3: Cross multiply
   407,469x = 890,662.50 × 890,662.50
4. Step 4: Simplify right side
   407,469x = 793,279,688,906.25
5. Step 5: Solve for x
   x = 793,279,688,906.25/407,469
6. Step 6: Final answer
   x = 1,946,846.73