Finding the Third Proportional to 31,905 and 46,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,905 : 46,870.50 = 46,870.50 : x
2. Step 2: Convert to fraction form
   31,905/46,870.50 = 46,870.50/x
3. Step 3: Cross multiply
   31,905x = 46,870.50 × 46,870.50
4. Step 4: Simplify right side
   31,905x = 2,196,843,770.25
5. Step 5: Solve for x
   x = 2,196,843,770.25/31,905
6. Step 6: Final answer
   x = 68,855.78