Finding the Third Proportional to 64,051.88 and 91,243.13

Step by Step Solution

1. Step 1: Write the proportion equation
   64,051.88 : 91,243.13 = 91,243.13 : x
2. Step 2: Convert to fraction form
   64,051.88/91,243.13 = 91,243.13/x
3. Step 3: Cross multiply
   64,051.88x = 91,243.13 × 91,243.13
4. Step 4: Simplify right side
   64,051.88x = 8,325,307,859.77
5. Step 5: Solve for x
   x = 8,325,307,859.77/64,051.88
6. Step 6: Final answer
   x = 129,977.58