Finding the Third Proportional to 469,968 and 685,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   469,968 : 685,147.50 = 685,147.50 : x
2. Step 2: Convert to fraction form
   469,968/685,147.50 = 685,147.50/x
3. Step 3: Cross multiply
   469,968x = 685,147.50 × 685,147.50
4. Step 4: Simplify right side
   469,968x = 469,427,096,756.25
5. Step 5: Solve for x
   x = 469,427,096,756.25/469,968
6. Step 6: Final answer
   x = 998,849.06