Finding the Third Proportional to 12,946,869 and 19,331,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,946,869 : 19,331,680.50 = 19,331,680.50 : x
2. Step 2: Convert to fraction form
   12,946,869/19,331,680.50 = 19,331,680.50/x
3. Step 3: Cross multiply
   12,946,869x = 19,331,680.50 × 19,331,680.50
4. Step 4: Simplify right side
   12,946,869x = 373,713,870,954,080.25
5. Step 5: Solve for x
   x = 373,713,870,954,080.25/12,946,869
6. Step 6: Final answer
   x = 28,865,192.89