Finding the Third Proportional to 65,813.13 and 99,308.53

Step by Step Solution

1. Step 1: Write the proportion equation
   65,813.13 : 99,308.53 = 99,308.53 : x
2. Step 2: Convert to fraction form
   65,813.13/99,308.53 = 99,308.53/x
3. Step 3: Cross multiply
   65,813.13x = 99,308.53 × 99,308.53
4. Step 4: Simplify right side
   65,813.13x = 9,862,184,379.03
5. Step 5: Solve for x
   x = 9,862,184,379.03/65,813.13
6. Step 6: Final answer
   x = 149,851.31