Finding the Third Proportional to 8,898,657,447 and 12,118,452,547.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,898,657,447 : 12,118,452,547.50 = 12,118,452,547.50 : x
2. Step 2: Convert to fraction form
   8,898,657,447/12,118,452,547.50 = 12,118,452,547.50/x
3. Step 3: Cross multiply
   8,898,657,447x = 12,118,452,547.50 × 12,118,452,547.50
4. Step 4: Simplify right side
   8,898,657,447x = 146,856,892,146,009,243,648
5. Step 5: Solve for x
   x = 146,856,892,146,009,243,648/8,898,657,447
6. Step 6: Final answer
   x = 16,503,263,893.53