Finding the Third Proportional to 42,926.63 and 66,412.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,926.63 : 66,412.69 = 66,412.69 : x
2. Step 2: Convert to fraction form
   42,926.63/66,412.69 = 66,412.69/x
3. Step 3: Cross multiply
   42,926.63x = 66,412.69 × 66,412.69
4. Step 4: Simplify right side
   42,926.63x = 4,410,645,060.97
5. Step 5: Solve for x
   x = 4,410,645,060.97/42,926.63
6. Step 6: Final answer
   x = 102,748.47