Finding the Third Proportional to 442,008 and 679,792.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,008 : 679,792.50 = 679,792.50 : x
2. Step 2: Convert to fraction form
   442,008/679,792.50 = 679,792.50/x
3. Step 3: Cross multiply
   442,008x = 679,792.50 × 679,792.50
4. Step 4: Simplify right side
   442,008x = 462,117,843,056.25
5. Step 5: Solve for x
   x = 462,117,843,056.25/442,008
6. Step 6: Final answer
   x = 1,045,496.56