Finding the Third Proportional to 77,972.63 and 123,955.31

Step by Step Solution

1. Step 1: Write the proportion equation
   77,972.63 : 123,955.31 = 123,955.31 : x
2. Step 2: Convert to fraction form
   77,972.63/123,955.31 = 123,955.31/x
3. Step 3: Cross multiply
   77,972.63x = 123,955.31 × 123,955.31
4. Step 4: Simplify right side
   77,972.63x = 15,364,919,496.97
5. Step 5: Solve for x
   x = 15,364,919,496.97/77,972.63
6. Step 6: Final answer
   x = 197,055.31