Finding the Third Proportional to 28,086.75 and 42,428.81

Step by Step Solution

1. Step 1: Write the proportion equation
   28,086.75 : 42,428.81 = 42,428.81 : x
2. Step 2: Convert to fraction form
   28,086.75/42,428.81 = 42,428.81/x
3. Step 3: Cross multiply
   28,086.75x = 42,428.81 × 42,428.81
4. Step 4: Simplify right side
   28,086.75x = 1,800,204,130.16
5. Step 5: Solve for x
   x = 1,800,204,130.16/28,086.75
6. Step 6: Final answer
   x = 64,094.43