Finding the Third Proportional to 28,906 and 43,240

Step by Step Solution

1. Step 1: Write the proportion equation
   28,906 : 43,240 = 43,240 : x
2. Step 2: Convert to fraction form
   28,906/43,240 = 43,240/x
3. Step 3: Cross multiply
   28,906x = 43,240 × 43,240
4. Step 4: Simplify right side
   28,906x = 1,869,697,600
5. Step 5: Solve for x
   x = 1,869,697,600/28,906
6. Step 6: Final answer
   x = 64,681.99