Finding the Third Proportional to 144,836 and 212,068.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,836 : 212,068.50 = 212,068.50 : x
2. Step 2: Convert to fraction form
   144,836/212,068.50 = 212,068.50/x
3. Step 3: Cross multiply
   144,836x = 212,068.50 × 212,068.50
4. Step 4: Simplify right side
   144,836x = 44,973,048,692.25
5. Step 5: Solve for x
   x = 44,973,048,692.25/144,836
6. Step 6: Final answer
   x = 310,510.15