Finding the Third Proportional to 19,312.50 and 42,315

Step by Step Solution

1. Step 1: Write the proportion equation
   19,312.50 : 42,315 = 42,315 : x
2. Step 2: Convert to fraction form
   19,312.50/42,315 = 42,315/x
3. Step 3: Cross multiply
   19,312.50x = 42,315 × 42,315
4. Step 4: Simplify right side
   19,312.50x = 1,790,559,225
5. Step 5: Solve for x
   x = 1,790,559,225/19,312.50
6. Step 6: Final answer
   x = 92,715.04