Finding the Third Proportional to 12,905,711 and 28,087,359

Step by Step Solution

1. Step 1: Write the proportion equation
   12,905,711 : 28,087,359 = 28,087,359 : x
2. Step 2: Convert to fraction form
   12,905,711/28,087,359 = 28,087,359/x
3. Step 3: Cross multiply
   12,905,711x = 28,087,359 × 28,087,359
4. Step 4: Simplify right side
   12,905,711x = 788,899,735,594,881
5. Step 5: Solve for x
   x = 788,899,735,594,881/12,905,711
6. Step 6: Final answer
   x = 61,127,956.11