Finding the Third Proportional to 42,213.50 and 66,844

Step by Step Solution

1. Step 1: Write the proportion equation
   42,213.50 : 66,844 = 66,844 : x
2. Step 2: Convert to fraction form
   42,213.50/66,844 = 66,844/x
3. Step 3: Cross multiply
   42,213.50x = 66,844 × 66,844
4. Step 4: Simplify right side
   42,213.50x = 4,468,120,336
5. Step 5: Solve for x
   x = 4,468,120,336/42,213.50
6. Step 6: Final answer
   x = 105,845.77