Finding the Third Proportional to 149,205,922 and 321,086,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,205,922 : 321,086,666.50 = 321,086,666.50 : x
2. Step 2: Convert to fraction form
   149,205,922/321,086,666.50 = 321,086,666.50/x
3. Step 3: Cross multiply
   149,205,922x = 321,086,666.50 × 321,086,666.50
4. Step 4: Simplify right side
   149,205,922x = 103,096,647,404,082,224
5. Step 5: Solve for x
   x = 103,096,647,404,082,224/149,205,922
6. Step 6: Final answer
   x = 690,968,870.55