Finding the Third Proportional to 39,646,513 and 55,831,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,646,513 : 55,831,870.50 = 55,831,870.50 : x
2. Step 2: Convert to fraction form
   39,646,513/55,831,870.50 = 55,831,870.50/x
3. Step 3: Cross multiply
   39,646,513x = 55,831,870.50 × 55,831,870.50
4. Step 4: Simplify right side
   39,646,513x = 3,117,197,763,528,770
5. Step 5: Solve for x
   x = 3,117,197,763,528,770/39,646,513
6. Step 6: Final answer
   x = 78,624,764.89