Finding the Third Proportional to 156,931,565 and 215,424,196

Step by Step Solution

1. Step 1: Write the proportion equation
   156,931,565 : 215,424,196 = 215,424,196 : x
2. Step 2: Convert to fraction form
   156,931,565/215,424,196 = 215,424,196/x
3. Step 3: Cross multiply
   156,931,565x = 215,424,196 × 215,424,196
4. Step 4: Simplify right side
   156,931,565x = 46,407,584,222,246,416
5. Step 5: Solve for x
   x = 46,407,584,222,246,416/156,931,565
6. Step 6: Final answer
   x = 295,718,609.72