Finding the Third Proportional to 66,897.56 and 91,734.19

Step by Step Solution

1. Step 1: Write the proportion equation
   66,897.56 : 91,734.19 = 91,734.19 : x
2. Step 2: Convert to fraction form
   66,897.56/91,734.19 = 91,734.19/x
3. Step 3: Cross multiply
   66,897.56x = 91,734.19 × 91,734.19
4. Step 4: Simplify right side
   66,897.56x = 8,415,161,156.29
5. Step 5: Solve for x
   x = 8,415,161,156.29/66,897.56
6. Step 6: Final answer
   x = 125,791.75