Finding the Third Proportional to 20,821,354 and 31,109,558

Step by Step Solution

1. Step 1: Write the proportion equation
   20,821,354 : 31,109,558 = 31,109,558 : x
2. Step 2: Convert to fraction form
   20,821,354/31,109,558 = 31,109,558/x
3. Step 3: Cross multiply
   20,821,354x = 31,109,558 × 31,109,558
4. Step 4: Simplify right side
   20,821,354x = 967,804,598,955,364
5. Step 5: Solve for x
   x = 967,804,598,955,364/20,821,354
6. Step 6: Final answer
   x = 46,481,347.90