Finding the Third Proportional to 12,905,718 and 28,087,372.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,905,718 : 28,087,372.50 = 28,087,372.50 : x
2. Step 2: Convert to fraction form
   12,905,718/28,087,372.50 = 28,087,372.50/x
3. Step 3: Cross multiply
   12,905,718x = 28,087,372.50 × 28,087,372.50
4. Step 4: Simplify right side
   12,905,718x = 788,900,493,953,756.25
5. Step 5: Solve for x
   x = 788,900,493,953,756.25/12,905,718
6. Step 6: Final answer
   x = 61,127,981.72