Finding the Third Proportional to 12,905,726 and 28,087,388

Step by Step Solution

1. Step 1: Write the proportion equation
   12,905,726 : 28,087,388 = 28,087,388 : x
2. Step 2: Convert to fraction form
   12,905,726/28,087,388 = 28,087,388/x
3. Step 3: Cross multiply
   12,905,726x = 28,087,388 × 28,087,388
4. Step 4: Simplify right side
   12,905,726x = 788,901,364,662,544
5. Step 5: Solve for x
   x = 788,901,364,662,544/12,905,726
6. Step 6: Final answer
   x = 61,128,011.29