Finding the Third Proportional to 65,663,136 and 142,541,136

Step by Step Solution

1. Step 1: Write the proportion equation
   65,663,136 : 142,541,136 = 142,541,136 : x
2. Step 2: Convert to fraction form
   65,663,136/142,541,136 = 142,541,136/x
3. Step 3: Cross multiply
   65,663,136x = 142,541,136 × 142,541,136
4. Step 4: Simplify right side
   65,663,136x = 20,317,975,452,170,496
5. Step 5: Solve for x
   x = 20,317,975,452,170,496/65,663,136
6. Step 6: Final answer
   x = 309,427,430.52