Finding the Third Proportional to 20,993,968 and 31,381,656

Step by Step Solution

1. Step 1: Write the proportion equation
   20,993,968 : 31,381,656 = 31,381,656 : x
2. Step 2: Convert to fraction form
   20,993,968/31,381,656 = 31,381,656/x
3. Step 3: Cross multiply
   20,993,968x = 31,381,656 × 31,381,656
4. Step 4: Simplify right side
   20,993,968x = 984,808,333,302,336
5. Step 5: Solve for x
   x = 984,808,333,302,336/20,993,968
6. Step 6: Final answer
   x = 46,909,109.00