Finding the Third Proportional to 28,858.50 and 68,774.63

Step by Step Solution

1. Step 1: Write the proportion equation
   28,858.50 : 68,774.63 = 68,774.63 : x
2. Step 2: Convert to fraction form
   28,858.50/68,774.63 = 68,774.63/x
3. Step 3: Cross multiply
   28,858.50x = 68,774.63 × 68,774.63
4. Step 4: Simplify right side
   28,858.50x = 4,729,949,043.89
5. Step 5: Solve for x
   x = 4,729,949,043.89/28,858.50
6. Step 6: Final answer
   x = 163,901.42