Finding the Third Proportional to 91,491,461 and 139,381,386

Step by Step Solution

1. Step 1: Write the proportion equation
   91,491,461 : 139,381,386 = 139,381,386 : x
2. Step 2: Convert to fraction form
   91,491,461/139,381,386 = 139,381,386/x
3. Step 3: Cross multiply
   91,491,461x = 139,381,386 × 139,381,386
4. Step 4: Simplify right side
   91,491,461x = 19,427,170,763,280,996
5. Step 5: Solve for x
   x = 19,427,170,763,280,996/91,491,461
6. Step 6: Final answer
   x = 212,338,622.11