Finding the Third Proportional to 42,153 and 56,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,153 : 56,383.50 = 56,383.50 : x
2. Step 2: Convert to fraction form
   42,153/56,383.50 = 56,383.50/x
3. Step 3: Cross multiply
   42,153x = 56,383.50 × 56,383.50
4. Step 4: Simplify right side
   42,153x = 3,179,099,072.25
5. Step 5: Solve for x
   x = 3,179,099,072.25/42,153
6. Step 6: Final answer
   x = 75,418.10