Finding the Third Proportional to 42,457.75 and 89,972.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,457.75 : 89,972.75 = 89,972.75 : x
2. Step 2: Convert to fraction form
   42,457.75/89,972.75 = 89,972.75/x
3. Step 3: Cross multiply
   42,457.75x = 89,972.75 × 89,972.75
4. Step 4: Simplify right side
   42,457.75x = 8,095,095,742.56
5. Step 5: Solve for x
   x = 8,095,095,742.56/42,457.75
6. Step 6: Final answer
   x = 190,662.38