Finding the Third Proportional to 416,817 and 666,229.50

Step by Step Solution

1. Step 1: Write the proportion equation
   416,817 : 666,229.50 = 666,229.50 : x
2. Step 2: Convert to fraction form
   416,817/666,229.50 = 666,229.50/x
3. Step 3: Cross multiply
   416,817x = 666,229.50 × 666,229.50
4. Step 4: Simplify right side
   416,817x = 443,861,746,670.25
5. Step 5: Solve for x
   x = 443,861,746,670.25/416,817
6. Step 6: Final answer
   x = 1,064,883.98