Finding the Third Proportional to 99,210 and 149,710.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,210 : 149,710.50 = 149,710.50 : x
2. Step 2: Convert to fraction form
   99,210/149,710.50 = 149,710.50/x
3. Step 3: Cross multiply
   99,210x = 149,710.50 × 149,710.50
4. Step 4: Simplify right side
   99,210x = 22,413,233,810.25
5. Step 5: Solve for x
   x = 22,413,233,810.25/99,210
6. Step 6: Final answer
   x = 225,917.08