Finding the Third Proportional to 99,042 and 213,484.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,042 : 213,484.50 = 213,484.50 : x
2. Step 2: Convert to fraction form
   99,042/213,484.50 = 213,484.50/x
3. Step 3: Cross multiply
   99,042x = 213,484.50 × 213,484.50
4. Step 4: Simplify right side
   99,042x = 45,575,631,740.25
5. Step 5: Solve for x
   x = 45,575,631,740.25/99,042
6. Step 6: Final answer
   x = 460,164.70