Finding the Third Proportional to 8,578,607 and 13,068,913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,578,607 : 13,068,913.50 = 13,068,913.50 : x
2. Step 2: Convert to fraction form
   8,578,607/13,068,913.50 = 13,068,913.50/x
3. Step 3: Cross multiply
   8,578,607x = 13,068,913.50 × 13,068,913.50
4. Step 4: Simplify right side
   8,578,607x = 170,796,500,070,482.25
5. Step 5: Solve for x
   x = 170,796,500,070,482.25/8,578,607
6. Step 6: Final answer
   x = 19,909,584.40