Finding the Third Proportional to 42,479.63 and 99,212.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,479.63 : 99,212.63 = 99,212.63 : x
2. Step 2: Convert to fraction form
   42,479.63/99,212.63 = 99,212.63/x
3. Step 3: Cross multiply
   42,479.63x = 99,212.63 × 99,212.63
4. Step 4: Simplify right side
   42,479.63x = 9,843,144,959.39
5. Step 5: Solve for x
   x = 9,843,144,959.39/42,479.63
6. Step 6: Final answer
   x = 231,714.50