Finding the Third Proportional to 148,121 and 211,664.50

Step by Step Solution

1. Step 1: Write the proportion equation
   148,121 : 211,664.50 = 211,664.50 : x
2. Step 2: Convert to fraction form
   148,121/211,664.50 = 211,664.50/x
3. Step 3: Cross multiply
   148,121x = 211,664.50 × 211,664.50
4. Step 4: Simplify right side
   148,121x = 44,801,860,560.25
5. Step 5: Solve for x
   x = 44,801,860,560.25/148,121
6. Step 6: Final answer
   x = 302,467.99