Finding the Third Proportional to 99,213 and 141,819

Step by Step Solution

1. Step 1: Write the proportion equation
   99,213 : 141,819 = 141,819 : x
2. Step 2: Convert to fraction form
   99,213/141,819 = 141,819/x
3. Step 3: Cross multiply
   99,213x = 141,819 × 141,819
4. Step 4: Simplify right side
   99,213x = 20,112,628,761
5. Step 5: Solve for x
   x = 20,112,628,761/99,213
6. Step 6: Final answer
   x = 202,721.71