Finding the Third Proportional to 442,843 and 917,181.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,843 : 917,181.50 = 917,181.50 : x
2. Step 2: Convert to fraction form
   442,843/917,181.50 = 917,181.50/x
3. Step 3: Cross multiply
   442,843x = 917,181.50 × 917,181.50
4. Step 4: Simplify right side
   442,843x = 841,221,903,942.25
5. Step 5: Solve for x
   x = 841,221,903,942.25/442,843
6. Step 6: Final answer
   x = 1,899,594.00