Finding the Third Proportional to 56,423.81 and 85,743.84

Step by Step Solution

1. Step 1: Write the proportion equation
   56,423.81 : 85,743.84 = 85,743.84 : x
2. Step 2: Convert to fraction form
   56,423.81/85,743.84 = 85,743.84/x
3. Step 3: Cross multiply
   56,423.81x = 85,743.84 × 85,743.84
4. Step 4: Simplify right side
   56,423.81x = 7,352,006,741.02
5. Step 5: Solve for x
   x = 7,352,006,741.02/56,423.81
6. Step 6: Final answer
   x = 130,299.72