Finding the Third Proportional to 89,217,490.50 and 136,390,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,217,490.50 : 136,390,522.50 = 136,390,522.50 : x
2. Step 2: Convert to fraction form
   89,217,490.50/136,390,522.50 = 136,390,522.50/x
3. Step 3: Cross multiply
   89,217,490.50x = 136,390,522.50 × 136,390,522.50
4. Step 4: Simplify right side
   89,217,490.50x = 18,602,374,627,823,008
5. Step 5: Solve for x
   x = 18,602,374,627,823,008/89,217,490.50
6. Step 6: Final answer
   x = 208,505,916.54