Finding the Third Proportional to 42,410.50 and 84,816.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,410.50 : 84,816.50 = 84,816.50 : x
2. Step 2: Convert to fraction form
   42,410.50/84,816.50 = 84,816.50/x
3. Step 3: Cross multiply
   42,410.50x = 84,816.50 × 84,816.50
4. Step 4: Simplify right side
   42,410.50x = 7,193,838,672.25
5. Step 5: Solve for x
   x = 7,193,838,672.25/42,410.50
6. Step 6: Final answer
   x = 169,624.00