Finding the Third Proportional to 99,819 and 146,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,819 : 146,812.50 = 146,812.50 : x
2. Step 2: Convert to fraction form
   99,819/146,812.50 = 146,812.50/x
3. Step 3: Cross multiply
   99,819x = 146,812.50 × 146,812.50
4. Step 4: Simplify right side
   99,819x = 21,553,910,156.25
5. Step 5: Solve for x
   x = 21,553,910,156.25/99,819
6. Step 6: Final answer
   x = 215,929.93