Finding the Third Proportional to 170,121 and 371,371.50

Step by Step Solution

1. Step 1: Write the proportion equation
   170,121 : 371,371.50 = 371,371.50 : x
2. Step 2: Convert to fraction form
   170,121/371,371.50 = 371,371.50/x
3. Step 3: Cross multiply
   170,121x = 371,371.50 × 371,371.50
4. Step 4: Simplify right side
   170,121x = 137,916,791,012.25
5. Step 5: Solve for x
   x = 137,916,791,012.25/170,121
6. Step 6: Final answer
   x = 810,698.21