Finding the Third Proportional to 65,458.13 and 99,516.09

Step by Step Solution

1. Step 1: Write the proportion equation
   65,458.13 : 99,516.09 = 99,516.09 : x
2. Step 2: Convert to fraction form
   65,458.13/99,516.09 = 99,516.09/x
3. Step 3: Cross multiply
   65,458.13x = 99,516.09 × 99,516.09
4. Step 4: Simplify right side
   65,458.13x = 9,903,452,915.26
5. Step 5: Solve for x
   x = 9,903,452,915.26/65,458.13
6. Step 6: Final answer
   x = 151,294.48