Finding the Third Proportional to 442,807.50 and 917,124

Step by Step Solution

1. Step 1: Write the proportion equation
   442,807.50 : 917,124 = 917,124 : x
2. Step 2: Convert to fraction form
   442,807.50/917,124 = 917,124/x
3. Step 3: Cross multiply
   442,807.50x = 917,124 × 917,124
4. Step 4: Simplify right side
   442,807.50x = 841,116,431,376
5. Step 5: Solve for x
   x = 841,116,431,376/442,807.50
6. Step 6: Final answer
   x = 1,899,508.10