Finding the Third Proportional to 931 and 1,922.50

Step by Step Solution

1. Step 1: Write the proportion equation
   931 : 1,922.50 = 1,922.50 : x
2. Step 2: Convert to fraction form
   931/1,922.50 = 1,922.50/x
3. Step 3: Cross multiply
   931x = 1,922.50 × 1,922.50
4. Step 4: Simplify right side
   931x = 3,696,006.25
5. Step 5: Solve for x
   x = 3,696,006.25/931
6. Step 6: Final answer
   x = 3,969.93