Finding the Third Proportional to 1,215,764,929 and 2,867,111,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,764,929 : 2,867,111,426.50 = 2,867,111,426.50 : x
2. Step 2: Convert to fraction form
   1,215,764,929/2,867,111,426.50 = 2,867,111,426.50/x
3. Step 3: Cross multiply
   1,215,764,929x = 2,867,111,426.50 × 2,867,111,426.50
4. Step 4: Simplify right side
   1,215,764,929x = 8,220,327,931,966,865,408
5. Step 5: Solve for x
   x = 8,220,327,931,966,865,408/1,215,764,929
6. Step 6: Final answer
   x = 6,761,445,190.50