Finding the Third Proportional to 19,402.31 and 42,615

Step by Step Solution

1. Step 1: Write the proportion equation
   19,402.31 : 42,615 = 42,615 : x
2. Step 2: Convert to fraction form
   19,402.31/42,615 = 42,615/x
3. Step 3: Cross multiply
   19,402.31x = 42,615 × 42,615
4. Step 4: Simplify right side
   19,402.31x = 1,816,038,225
5. Step 5: Solve for x
   x = 1,816,038,225/19,402.31
6. Step 6: Final answer
   x = 93,599.06