Finding the Third Proportional to 59,720.63 and 90,345.38

Step by Step Solution

1. Step 1: Write the proportion equation
   59,720.63 : 90,345.38 = 90,345.38 : x
2. Step 2: Convert to fraction form
   59,720.63/90,345.38 = 90,345.38/x
3. Step 3: Cross multiply
   59,720.63x = 90,345.38 × 90,345.38
4. Step 4: Simplify right side
   59,720.63x = 8,162,286,783.89
5. Step 5: Solve for x
   x = 8,162,286,783.89/59,720.63
6. Step 6: Final answer
   x = 136,674.50