Finding the Third Proportional to 63,139.50 and 105,219

Step by Step Solution

1. Step 1: Write the proportion equation
   63,139.50 : 105,219 = 105,219 : x
2. Step 2: Convert to fraction form
   63,139.50/105,219 = 105,219/x
3. Step 3: Cross multiply
   63,139.50x = 105,219 × 105,219
4. Step 4: Simplify right side
   63,139.50x = 11,071,037,961
5. Step 5: Solve for x
   x = 11,071,037,961/63,139.50
6. Step 6: Final answer
   x = 175,342.50