Finding the Third Proportional to 19,686,531 and 30,820,069.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,686,531 : 30,820,069.50 = 30,820,069.50 : x
2. Step 2: Convert to fraction form
   19,686,531/30,820,069.50 = 30,820,069.50/x
3. Step 3: Cross multiply
   19,686,531x = 30,820,069.50 × 30,820,069.50
4. Step 4: Simplify right side
   19,686,531x = 949,876,683,984,830.25
5. Step 5: Solve for x
   x = 949,876,683,984,830.25/19,686,531
6. Step 6: Final answer
   x = 48,250,079.41