Finding the Third Proportional to 61,111.13 and 91,288.69

Step by Step Solution

1. Step 1: Write the proportion equation
   61,111.13 : 91,288.69 = 91,288.69 : x
2. Step 2: Convert to fraction form
   61,111.13/91,288.69 = 91,288.69/x
3. Step 3: Cross multiply
   61,111.13x = 91,288.69 × 91,288.69
4. Step 4: Simplify right side
   61,111.13x = 8,333,624,465.47
5. Step 5: Solve for x
   x = 8,333,624,465.47/61,111.13
6. Step 6: Final answer
   x = 136,368.37