Finding the Third Proportional to 471,617 and 666,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   471,617 : 666,685.50 = 666,685.50 : x
2. Step 2: Convert to fraction form
   471,617/666,685.50 = 666,685.50/x
3. Step 3: Cross multiply
   471,617x = 666,685.50 × 666,685.50
4. Step 4: Simplify right side
   471,617x = 444,469,555,910.25
5. Step 5: Solve for x
   x = 444,469,555,910.25/471,617
6. Step 6: Final answer
   x = 942,437.52