Finding the Third Proportional to 31,588,139 and 68,989,563

Step by Step Solution

1. Step 1: Write the proportion equation
   31,588,139 : 68,989,563 = 68,989,563 : x
2. Step 2: Convert to fraction form
   31,588,139/68,989,563 = 68,989,563/x
3. Step 3: Cross multiply
   31,588,139x = 68,989,563 × 68,989,563
4. Step 4: Simplify right side
   31,588,139x = 4,759,559,802,930,969
5. Step 5: Solve for x
   x = 4,759,559,802,930,969/31,588,139
6. Step 6: Final answer
   x = 150,675,536.88