Finding the Third Proportional to 12,905,730 and 28,087,396

Step by Step Solution

1. Step 1: Write the proportion equation
   12,905,730 : 28,087,396 = 28,087,396 : x
2. Step 2: Convert to fraction form
   12,905,730/28,087,396 = 28,087,396/x
3. Step 3: Cross multiply
   12,905,730x = 28,087,396 × 28,087,396
4. Step 4: Simplify right side
   12,905,730x = 788,901,814,060,816
5. Step 5: Solve for x
   x = 788,901,814,060,816/12,905,730
6. Step 6: Final answer
   x = 61,128,027.17