Finding the Third Proportional to 69,621 and 112,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,621 : 112,099.50 = 112,099.50 : x
2. Step 2: Convert to fraction form
   69,621/112,099.50 = 112,099.50/x
3. Step 3: Cross multiply
   69,621x = 112,099.50 × 112,099.50
4. Step 4: Simplify right side
   69,621x = 12,566,297,900.25
5. Step 5: Solve for x
   x = 12,566,297,900.25/69,621
6. Step 6: Final answer
   x = 180,495.80