Finding the Third Proportional to 30,105 and 42,997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,105 : 42,997.50 = 42,997.50 : x
2. Step 2: Convert to fraction form
   30,105/42,997.50 = 42,997.50/x
3. Step 3: Cross multiply
   30,105x = 42,997.50 × 42,997.50
4. Step 4: Simplify right side
   30,105x = 1,848,785,006.25
5. Step 5: Solve for x
   x = 1,848,785,006.25/30,105
6. Step 6: Final answer
   x = 61,411.23