Finding the Third Proportional to 49,111.31 and 77,886.56

Step by Step Solution

1. Step 1: Write the proportion equation
   49,111.31 : 77,886.56 = 77,886.56 : x
2. Step 2: Convert to fraction form
   49,111.31/77,886.56 = 77,886.56/x
3. Step 3: Cross multiply
   49,111.31x = 77,886.56 × 77,886.56
4. Step 4: Simplify right side
   49,111.31x = 6,066,316,618.07
5. Step 5: Solve for x
   x = 6,066,316,618.07/49,111.31
6. Step 6: Final answer
   x = 123,521.78