Finding the Third Proportional to 442,788.75 and 917,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,788.75 : 917,086.50 = 917,086.50 : x
2. Step 2: Convert to fraction form
   442,788.75/917,086.50 = 917,086.50/x
3. Step 3: Cross multiply
   442,788.75x = 917,086.50 × 917,086.50
4. Step 4: Simplify right side
   442,788.75x = 841,047,648,482.25
5. Step 5: Solve for x
   x = 841,047,648,482.25/442,788.75
6. Step 6: Final answer
   x = 1,899,433.19