Finding the Third Proportional to 39,646,510 and 55,831,866

Step by Step Solution

1. Step 1: Write the proportion equation
   39,646,510 : 55,831,866 = 55,831,866 : x
2. Step 2: Convert to fraction form
   39,646,510/55,831,866 = 55,831,866/x
3. Step 3: Cross multiply
   39,646,510x = 55,831,866 × 55,831,866
4. Step 4: Simplify right side
   39,646,510x = 3,117,197,261,041,956
5. Step 5: Solve for x
   x = 3,117,197,261,041,956/39,646,510
6. Step 6: Final answer
   x = 78,624,758.17