Finding the Third Proportional to 66,243 and 99,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,243 : 99,112.50 = 99,112.50 : x
2. Step 2: Convert to fraction form
   66,243/99,112.50 = 99,112.50/x
3. Step 3: Cross multiply
   66,243x = 99,112.50 × 99,112.50
4. Step 4: Simplify right side
   66,243x = 9,823,287,656.25
5. Step 5: Solve for x
   x = 9,823,287,656.25/66,243
6. Step 6: Final answer
   x = 148,291.71